Apache Shiro 的 Spring 上传文件过滤器时获取 ClassCastException答案

【问题标题】：Get a ClassCastException when Spring upload file filter by Apache ShiroApache Shiro 的 Spring 上传文件过滤器时获取 ClassCastException
【发布时间】：2014-02-13 10:46:30
【问题描述】：

我用 Apache Shiro 做一个 Web 项目的 AA，Spring 也用过。上传文件时，会出现以下异常，我无法从谷歌找到相关案例。有人见过这个吗？

java.lang.ClassCastException: org.apache.shiro.web.servlet.ShiroHttpServletRequest cannot be cast to org.springframework.web.multipart.support.DefaultMultipartHttpServletRequest</h1><HR size="1" noshade="noshade"><p><b>type</b> Exception report</p><p><b>message</b> <u>java.lang.ClassCastException: org.apache.shiro.web.servlet.ShiroHttpServletRequest cannot be cast to org.springframework.web.multipart.support.DefaultMultipartHttpServletRequest</u></p><p><b>description</b> <u>The server encountered an internal error that prevented it from fulfilling this request.</u></p><p><b>exception</b> <pre>javax.servlet.ServletException: java.lang.ClassCastException: org.apache.shiro.web.servlet.ShiroHttpServletRequest cannot be cast to org.springframework.web.multipart.support.DefaultMultipartHttpServletRequest
org.apache.shiro.web.servlet.AdviceFilter.cleanup(AdviceFilter.java:196)
org.apache.shiro.web.servlet.AdviceFilter.doFilterInternal(AdviceFilter.java:148)
org.apache.shiro.web.servlet.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:125)
org.apache.shiro.web.servlet.ProxiedFilterChain.doFilter(ProxiedFilterChain.java:66)
org.apache.shiro.web.servlet.AbstractShiroFilter.executeChain(AbstractShiroFilter.java:449)
org.apache.shiro.web.servlet.AbstractShiroFilter$1.call(AbstractShiroFilter.java:365)
org.apache.shiro.subject.support.SubjectCallable.doCall(SubjectCallable.java:90)
org.apache.shiro.subject.support.SubjectCallable.call(SubjectCallable.java:83)
org.apache.shiro.subject.support.DelegatingSubject.execute(DelegatingSubject.java:383)
org.apache.shiro.web.servlet.AbstractShiroFilter.doFilterInternal(AbstractShiroFilter.java:362)
org.apache.shiro.web.servlet.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:125)
org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:346)
org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:259)
com.weardex.web.filter.auth.AuthFilter.doFilter(AuthFilter.java:62)
org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:88)
org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:76)

【问题讨论】：

标签： spring security web upload shiro

【解决方案1】：

我在使用 grails 时遇到了类似的问题（相同的区别）。我错过了表单中的 enctype (enctype="multipart/form-data") 并且它再次起作用了：

基于这个答案groovy upload file 我意识到我的包含形式覆盖了内部形式。

【讨论】：